Thromboelastography and routine coagulation tests in the management of coagulation during ECMO therapy: a comparative study / 中国输血杂志

【Objective】 To investigate the correlation and consistency between the parameters of thromboelastography(TEG) and routine coagulation tests, and to evaluate the application value of the two methods in heparin anticoagulation monitoring and coagulation function monitoring in patients receiving extracorporeal membrane oxygenation(ECMO) therapy. 【Methods】 A total of 138 patients who recieved ECMO in the Department of Critical Care Medicine of the People′s Hospital of Guangxi Zhuang Autonomous Region from October 2021 to December 2022 were selected. A total of 317 pairs of ordinary TEG and heparinase-modified TEG(hmTEG) parameters measured simultaneously were analyzed for correlation and consistency with activated partial thromboplastin time(APTT), fibrinogen(Fib), and platelet count(Plt), and the parameters tested when ECMO was established and 24 hours after ECMO operation were compared. 【Results】 The correlation coefficient between R values and APTT of hmTEG(r=0.441, P0.05), while as for hmTEG, the correlation was 0.359(P0.05). 【Conclusion】 The parameters of hmTEG can better reflect the real level of coagulation factors in patients receiving ECMO. The results of hmTEG and APTT are complementary to assess whether heparin in ECMO patients is overdosed, and hmTEG has unique advantages. Routine coagulation tests and TEG cannot replace each other, and the combination of them can achieve better anticoagulation and coagulation management.

Management of Harlequin Syndrome Under ECPELLA Support: A Report of Two Cases and a Proposed Approach

The use of ECPELLA in patients with severe lung disease may result in an unfavorable phenomenon of differential hypoxia. The simultaneous evaluation of three arterial blood samples from different arterial line (right radial artery, left radial artery, ECMO arterial line) in patients at risk of Harlequin syndrome (also called differential hypoxemia (DH)) can localize the 搈ixing cloud� along the aorta. Focusing the attention on the 搈ixing cloud� position instead of on isolated flows of Veno?Arterial Extracorporeal Membrane Oxygenation (VA ECMO) and Impella CP makes the decision making easier about how to modify MCSs flows according to the clinical context. Herein, we present two cases in which ECPELLA configuration was used to treat a cardiogenic shock condition and how the ECPELLA-induced hypoxia was managed.

Analysis of effect of preoperative renal insufficiency on clinical prognosis of heart transplant recipients / 器官移植

Objective To evaluate the effect of renal insufficiency before heart transplantation on perioperative death, complications and long-term survival, and to compare the differences between preoperative serum creatinine (Scr) and estimated glomerular filtration rate (eGFR) in preoperative risk assessment. Methods Clinical data of 1 095 heart transplant recipients were retrospectively analyzed. According to preoperative Scr level, all recipients were divided into the Scr < 133 μmol/L(n=980), Scr 133-176 μmol/L (n=83) and Scr≥177 μmol/L groups (n=32). According to preoperative eGFR, all recipients were divided into eGFR≥90 mL/(min·1.73m2) (n=436), eGFR 60-89 mL/(min·1.73m2) (n=418) and eGFR < 60 mL/(min·1.73m2) groups (n=241). Clinical prognosis of postoperative renal function, perioperative and long-term outcomes of recipients were compared among different groups. The effect of eGFR and Scr level on renal function injury and long-term survival after heart transplantation was assessed. Results With the increase of preoperative Scr level, the proportion of recipients undergoing postoperative continuous renal replacement therapy (CRRT) was increased, the proportion of recipients receiving postoperative mechanical circulatory support was elevated, the incidence of postoperative complications was increased, the duration of mechanical ventilation and intensive care unit(ICU) stay was prolonged, and the in-hospital fatality was increased. The differences among three groups were statistically significant (all P < 0.05). With the decrease of preoperative eGFR, the proportion of recipients receiving postoperative CRRT was increased, the proportion of recipients using postoperative intra-aortic balloon pump (IABP) was elevated, the duration of mechanical ventilation and ICU stay was prolonged, and the in-hospital fatality was increased. The differences among three groups were statistically significant (all P < 0.05). Scr≥177 μmol/L was an independent risk factor for postoperative death [adjusted hazard ratio (HR) 3.64, 95% confidence interval (CI) 1.89-6.99, P < 0.01]. Among different groups classified by Scr and eGFR, the cumulative incidence rate of postoperative renal function injury and long-term survival rate were statistically significant among three groups (all P < 0.05). In patients with preoperative Scr < 133 μmol/L, the cumulative incidence rate of postoperative long-term renal function injury was significantly increased with the decrease of preoperative eGFR (P < 0.01). There was no significant difference in postoperative long-term survival rate among patients stratified by different eGFR (P > 0.05). Conclusions Renal insufficiency before heart transplantation is associated with poor perioperative and long-term prognosis. Preoperative Scr and eGFR are the independent risk factors for postoperative renal function injury. Scr yields low sensitivity in the assessment of preoperative renal function, whereas it has high accuracy in predicting perioperative death risk. And eGFR is a more sensitive parameter to evaluate preoperative renal function, which may identify early-stage renal functional abnormality and take effective measures during early stage to reduce adverse effect on prognosis.

Development status and new challenges of heart transplantation / 器官移植

Heart transplantation is the primary therapeutic option for patients with end-stage heart failure. The shortage of donors has been the main limiting factor for the increasing quantity of heart transplantation. With persistent updating and introduction of novel technologies, the donor pool has been increasingly expanded, such as using the heart from older donors, donors infected with hepatitis C virus, donors dying from drug overdose or donation after cardiac death (DCD) donors, etc. Meantime, the proportion of recipients with advanced age, multiple organ dysfunction, mechanical circulatory support and human leukocyte antigen antibody sensitization has been significantly increased in recent years. The shortage of donors, complication of recipients' conditions, individualized management of immunosuppressive therapy and prevention and treatment of long-term cardiac allograft vasculopathy are all challenges in the field of heart transplantation. In this article, novel progresses on donor pool expansion, improving the quality of recipients, strengthening the diagnosis and treatment of rejection, and preventing cardiac allograft vasculopathy were reviewed, aiming to prolong the survival and enhance the quality of life of patients with end-stage heart failure on the waiting list or underwent heart transplantation.

Application of ECMO in pediatric heart transplantation / 器官移植

Extracorporeal membrane oxygenation (ECMO) could pump the blood from human veins to the outside of the body, oxygenate the red blood cells in an artificial environment and then return them back into the body. ECMO could replace the heart and lungs to complete gas exchange and systemic blood perfusion in patients with severe cardiopulmonary insufficiency, which also plays an important role in the field of heart transplantation. Besides circulatory support treatment after heart transplantation, ECMO may also be used to prolong the waiting time for heart transplantation in patients with respiratory and circulatory failure before operation, as a bridging therapy for heart transplantation. However, at present, the application of ECMO in pediatric heart transplantation still exist challenges, such as high perioperative mortality and difficulty in determining the timing of treatment, etc. In this article, the development history of ECMO application in pediatric heart transplantation, use of ECMO before and after pediatric heart transplantation, ECMO-related complications in children, and application of ventricular assist device (VAD) in pediatric heart transplantation were briefly reviewed, aiming to provide reference for promoting the application of ECMO in pediatric heart transplantation.

Application of extracorporeal membrane oxygenation to adults with cardiogenic shock and cardiac arrest in hospital / 上海交通大学学报（医学版）

Objective·To assess the effect of veno-arterial extracorporeal membrane oxygenation(VA-ECMO)treatment on the mortality rate of patients suffering from cardiogenic shock and cardiac arrest in hospital.Methods·A total of 19 patients with cardiogenic shock or cardiac arrest who were treated with VA-ECMO treatment in Suzhou Kowloon Hospital,Shanghai Jiao Tong University School of Medicine from September 2017 to March 2022 were included in the retrospective study.Patients were divided into extracorporeal cardiopulmonary resuscitation(ECPR)group(n=9)and VA-ECMO for cardiogenic shock(E-CS)group(n=10)according to whether cardiac arrest had occurred.The general demographic data,clinical data,Sequential Organ Failure Assessment(SOFA)scores,postoperative complications and prognostic indicators of the two groups of patients were collected.Univariate and multivariate Cox proportional hazard regression analyses were used to evaluate the correlation between each covariate and hospital mortality.Results·Among the included patients,there were 15 males(78.9％),with an average age of 46.5(34.5,61.6)years.The incidence of postoperative complications was as follows:bleeding(47.4％),AKI(36.8％),infection(31.6％),limb ischemia(15.8％)and cerebrovascular accident(5.3％).The duration of VA-ECMO was 4.0(2.0,6.8)days,and the intensive care duration was 11.5(5.8,26.2)days;the ECMO withdrawal success rate was 63.2％,and the hospital mortality was 63.2％.The results of univariate Cox proportional hazard regression analysis showed that AKI(prior to VA-ECMO initiation),postoperative complications of infection and limb ischemia were correlated with the hospital mortality of patients(all P＜0.05).The results of multivariate Cox proportional hazard regression analysis showed that AKI(prior to VA-ECMO initiation),postoperative complications of infection and limb ischemia were also independent risk factors for the hospital mortality of patients(all P＜0.05).Conclusion·For patients with cardiogenic shock and cardiac arrest treated with VA-ECMO,AKI(prior to VA-ECMO initiation),postoperative infection and limb ischemia are independently associated with higher hospital mortality.

Global development trend of ECMO based on utility patent analysis / 医疗卫生装备

The global patent data on extracorporeal membrane oxygenation(ECMO)in IncomPat Global Patent Database as of August 29,2022 were retrieved.The development trend and layout of ECMO industry were analyzed in terms of global patent application trend,patent distribution,patent technology,major patent applicants and their patent layout.Some suggestions were put forward for the innovation and development of ECMO industry in China so as to provide references for the formulation of national industrial policy,planning of industry technology direction and enterprise technology research and development and patent layout.[Chinese Medical Equipment Journal,2023,44(10):68-75]

A Case of Neonatal Marfan Syndrome Requiring Double Atrioventricular Valve Replacement due to Rapid Exacerbation of the Repaired Valves / 日本心臓血管外科学会雑誌

Neonatal Marfan syndrome is the most severe form of Marfan syndrome usually showing critical cardio-respiratory symptoms from the neonatal period or early infancy. We report a boy with this syndrome who presented with heart failure at 3 months of age and was referred to our department at 6 months old after intense medical treatment. He had enophthalmos, funnel chest, arachnodactyly, and Steinberg's thumb sign, but had no family history of Marfan syndrome or other cardiac diseases. Left ventricular dilatation, severe mitral regurgitation and moderate tricuspid regurgitation were noted on echocardiography. Mitral valvuloplasty and tricuspid annuloplasty were performed, and the regurgitation improved to trivial and mild level, respectively. However, rapid exacerbation of mitral regurgitation occurred, and the patient fell into circulatory collapse which needed circulatory support with extracorporeal membrane oxygenator (ECMO) on 18th postoperative day. In the emergency operation, the previous surgical procedures on the mitral valve were intact and we thought that rapid progression of the mitral annular dilatation and valve expansion to be the cause of exacerbation. Mitral valve replacement (Regent® 21 mm aortic) was performed, and the cardiac function improved, but ECMO was still needed because of the depressed respiratory function. Furthermore, tricuspid regurgitation due to annular dilatation and valve expansion was aggravated rapidly which needed tricuspid valve replacement (ATS® 20 mm mitral) 9 days after the mitral valve replacement. ECMO was ceased on the 37th day and the patient was extubated on 71st day. He was discharged from the hospital 5 months after the first operation. One year has passed after discharge, and he is doing well with anticoagulation. In the treatment of neonatal Marfan syndrome, surgical procedure for valve repair is still controversial and it should be remembered that rapid exacerbation of the atrioventricular valve can occur even after satisfactory valve repair and there should be no hesitation regarding surgical intervention when needed.

Mechanical Circulatory Support (MCS) for Cardiogenic Shock / 日本心臓血管外科学会雑誌

Mechanical Circulatory Support (MCS) is established to salvage cases with cardiogenic shock. MCS includes intra-aortic balloon pumping (IABP), veno-arterial extracorporeal membrane oxygenation (VA-ECMO), or pump-catheter. Prompt introduction of these devices enables 1) unloading of left and/or right ventricles, 2) sufficient supply of oxygenated blood to end-organs, and 3) maintenance of pulmonary circulation. Under MCS, then, cause of cardiogenic shock is explored and appropriate treatments are given to wean-off the MCS. In this review, selection of the MCS devices, technical tips of each MCS, and management of the cases under MCS are explained.

Cardiac Tamponade in a Patient Supported by Veno?arterial Extracorporeal Membrane Oxygenation

Cardiac tamponade occurring in a patient supported on central veno?arterial extracorporeal membrane oxygenation is depicted in a transesophageal echocardiography image and associated rendering. Prompt recognition of tamponade, which can be assisted with echocardiography, and emergent evacuation is critical to restoring cardiovascular stability

Vascular Access Complications in Patients Undergoing Veno-Arterial ECMO and Their Impact on Survival in Patients With Refractory Cardiogenic Shock: A Retrospective 8-Year Study

Introduction:Veno-arterial extracorporeal membrane oxygenation (ECMO) is well-recognized treatment modality for patients with refractory cardiogenic shock. Uncomplicated cannulation is a prerequisite and basis for achieving a successful outcome in ECMO. Vascular access is obtained either by surgical cut-down. Common vascular access complications are bleeding and limb ischemia. Objective: To evaluate cannulation technique, the incidence of vascular complications, and their impact on the outcome. Methods: A retrospective data analysis conducted on 95 patients receiving ECMO from 2013 to 2020 was done. The patients were divided into two groups: no vascular access complications (non-VAC group) and vascular access complications (VAC group). The groups were compared related to the hospital and ICU stays and blood transfusion. Results: The patients in both groups were demographically and clinically comparable. The Non-VAC group had 75 patients, whereas the VAC group had a total of 20 patients. The main complication observed in the VAC group was bleeding from the cannulation site which required more blood transfusion than the non-VAC group (6.8 ± 1.02 vs 4.2 ± 1.26). Limb ischemia was another complication seen in the VAC group (4.2%, n = 4). Two patients had delayed bleeding after decannulation. The overall average length of stay in the hospital was statistically similar in both the groups (22 days in the VAC group vs 18 days in the non-VAC group), but the average ICU stay was more in the VAC group compared to the non-VAC group (18 days vs 12.06 days). Conclusion: Bleeding and limb ischemia are the important vascular access site complications, which increase blood transfusion requirements, ICU stay, and overall hospital stay.

Dispositivos de asistencia ventricular en el shock cardiogénico posinfarto: importancia del soporte hemodinámico: reporte de caso / Ventricular assist devices in post-infarction cardiogenic shock: importance of hemodynamic support: case report / Dispositivos de assistência ventricular no choque cardiogênico pós-infarto: importância do suporte hemodinâmico: relato de caso

El shock cardiogénico posinfarto caracterizado por un estado de insuficiencia circulatoria sistémica requiere de un tratamiento precoz en vistas a restablecer la estabilidad hemodinámica y la función ventricular. Este consta de la reperfusión coronaria mediante revascularización miocárdica; en algunos casos es necesaria la utilización de dispositivos de asistencia ventricular. El ECMO venoarterial es un sistema de circulación extracorpórea que permite un soporte biventricular oxigenando la sangre y reintroduciéndola mediante un flujo continuo hacia la circulación arterial sistémica. El uso de dicho dispositivo en pacientes con shock cardiogénico ha mostrado una mejoría significativa de la sobrevida a 30 días en comparación con el uso del balón de contrapulsación intraaórtico. No obstante, sus potenciales complicaciones, como dificultad en el vaciamiento ventricular izquierdo, síndrome de Arlequín, sangrados e infecciones, hacen fundamental la formación y el trabajo en equipo del heart team. Un porcentaje no menor de estos pacientes presentarán una severa disfunción ventricular permanente, por lo que podrían ser candidatos a dispositivos de asistencia ventricular izquierda de larga duración tipo Heartmate III como puente al trasplante cardíaco, el cual ha mostrado resultados satisfactorios con una excelente sobrevida a mediano plazo.

Post-infarction cardiogenic shock characterized by a state of systemic circulatory failure requires early treatment in order to restore hemodynamic stability and ventricular function. This consists of coronary reperfusion through myocardial revascularization, requiring in some cases the use of ventricular assist devices. Veno-arterial ECMO is an extracorporeal circulation system that allows biventricular support by oxygenating the blood and reintroducing it through a continuous flow towards the systemic arterial circulation. The use of this device in patients with cardiogenic shock has shown a significant improvement in survival at 30 days compared to the use of intra-aortic balloon pump. However, its potential complications, such as difficulty in left ventricular emptying, Harlequin syndrome, bleeding and infections, make the training and teamwork of the heart team essential. A great percentage of these patients will present a severe permanent ventricular dysfunction, so they could be candidates for long-term mechanical circulatory support devices like Heartmate III as a bridge to transplant or myocardial recovery, or destination therapy, which has shown satisfactory results with excellent medium-term survival.

O choque cardiogênico pós-infarto caracterizado por um estado de insuficiência circulatória sistêmica requer tratamento precoce para restabelecer a estabilidade hemodinâmica e a função ventricular. Esta consiste na reperfusão coronariana por meio de revascularização miocárdica, necessitando, em alguns casos, do uso de dispositivos de assistência ventricular. A ECMO venoarterial é um sistema de circulação extracorpórea que permite o suporte biventricular oxigenando o sangue e reintroduzindo-o através de um fluxo contínuo para a circulação arterial sistêmica. O uso desse dispositivo em pacientes com choque cardiogênico mostrou melhora significativa na sobrevida em 30 dias em relação ao uso de contrapulsação com balão intra-aórtico. No entanto, suas potenciais complicações, como dificuldade de esvaziamento ventricular esquerdo, síndrome de Harlequin, sangramentos e infecções, tornam imprescindível o treinamento e o trabalho em equipe do time do coração. Não uma pequena porcentagem desses pacientes apresentará uma condição ventricular permanente grave, podendo ser candidatos a dispositivos de assistência ventricular esquerda de longa duração do tipo Heartmate III como ponte para o transplante cardíaco, que tem demonstrado resultados satisfatórios com excelente sobrevida em médio prazo.

Implementación de membrana de oxigenación extracorpórea. Relato de experiencia / Implementation of extracorporeal oxygenation membrane. Experience report

Se incorporó en la institución un recurso que se utiliza hace algunos años en la Argentina, pero con la pandemia tomó vital importancia; se trata de la Membrana de Oxigenación Extracorpórea, (ECMO). Es una modalidad de apoyo vital de alta complejidad y costo, que se utiliza en pacientes con insuficiencia respiratoria o cardiaca severas. ECMO consiste en un circuito de circulación extracorpórea que permite la eliminación del dióxido de carbono y la oxigenación de la sangre. Hay dos tipos de circuitos: el veno-arterial, en el cual el circuito toma la sangre venosa de las cavas, y el atrio derecho, se oxigena y luego se la regresa al circuito mayor a través de la aorta, y el circuito veno-venoso, que toma la sangre venosa de la vena cava inferior y la regresa oxigenada al atrio derecho. La implementación del ECMO en el Sanatorio Allende, exigió cambios importantes de manera estructurada e integrada con un plan multidisciplinario dirigido al cuidado de los pacientes. Donde el enfoque de la enfermera hacia la persona en una situación crítica sometida a ECMO se considera determinante, siendo este profesional esencial para el proceso. El equipo de salud es responsable de una presencia continua para monitorear, vigilar y prevenir complicaciones, así como del manejo y coordinación de la atención. Se desarrolló el protocolo de cuidado, haciendo hincapié en las fortalezas, debilidades y oportunidades. La importancia de este nuevo desafío en el servicio de Unidad Coronaria radica en adquirir nuevos conocimientos, tecnologías, unificar cuidados de enfermería en post del bienestar, la recuperación y la seguridad del paciente[AU]

A resource that has been used for some years in Argentina was incorporated into the institution, but with the pandemic it took on vital importance; This is ECMO (extracorporeal membrane oxygenation). It is a life support modality of high complexity and cost, which is used in patients with severe respiratory or heart failure. ECMO consists of an extracorporeal circulation circuit that allows the elimination of carbon dioxide and oxygenation of the blood. There are two types of circuits: the veno-arterial, in which the circuit takes venous blood from the cavas and the right atrium, oxygenates it and then returns it to the larger circuit through the aorta, and the veno-arterial circuit. venous, which takes venous blood from the inferior vena cava and returns it oxygenated to the right atrium. The implementation of ECMO at the Sanatorio Allende requires important changes in a structured and integrated manner with a multidisciplinary plan aimed at patient care. Where the nurse's approach to the person in a critical situation subjected to ECMO is considered decisive, this professional being essential for the process. The health team is responsible for a continuous presence to monitor, monitor and prevent complications, as well as the management and coordination of care. The protocol was developed, emphasizing the strengths, weaknesses and The importance of this new challenge in the Coronary Unit service lies in acquiring new knowledge, technologies, unifying nursing care in post-wellness, recovery and patient safety[AU]

Um recurso usado há alguns anos na Argentina foi incorporado à instituição, mas com a pandemia assumiu vital importância; Isso é ECMO (oxigenação por membrana extracorpórea). É uma modalidade de suporte de vida de alta complexidade e custo, que é utilizada em pacientes com insuficiência respiratória ou cardíaca grave. A ECMO consiste em um circuito de circulação extracorpórea que permite a eliminação do dióxido de carbono e a oxigenação do sangue. Existem dois tipos de circuitos: o veno-arterial, no qual o circuito leva o sangue venoso das cavas e do átrio direito, oxigena-o e depois o devolve ao circuito maior através da aorta, e o circuito veno-arterial. que retira o sangue venoso da veia cava inferior e o devolve oxigenado ao átrio direito. A implantação da ECMO no Sanatório Allende requer mudanças importantes de forma estruturada e integrada com um plano multidisciplinar voltado para a assistência ao paciente. Onde a abordagem do enfermeiro à pessoa em situação crítica submetida à ECMO é considerada decisiva, sendo este profissional essencial ao processo. A equipe de saúde é responsável por uma presença contínua para monitorar, monitorar e prevenir complicações, bem como a gestão e coordenação do cuidado. O protocolo foi desenvolvido, enfatizando os pontos fortes, fracos e A importância deste novo desafio no serviço da Unidade Coronariana está em adquirir novos conhecimentos, tecnologias, unificar os cuidados de enfermagem no pós-bem, recuperação e segurança do paciente[AU]

Levosimendan: evolution over last two decades

Levosimendan was maiden agent at the time of its emergence, promoting inotropy mainly through calcium sensitization of cardiac troponin C(cTnC). Levosimendan seems a lucrative option but has not demonstrated a clear superiority to other inotropes in well-designed trials. We searched the PubMed database and reviewed the pertinent studies published till 2021 and summarized various trials/studies to come to a consensus regarding its indications in cardiac patients.Patients with decompensated heart failure requiring inotropic support and receiving beta-blockers represent most widely accepted indication. Levosimendan infusions are increasingly used to facilitate extracorporeal membrane oxygenation (ECMO) weaning and avoiding hospitalizations in patients with end-stage heart failure. Levosimendan doesn抰 seem to have long term survival benefit in ventricular dysfunction patients undergoing surgery. The evidence supporting therole in right ventricular failure is not well-established.These lines of evidence require further investigation and their clinical significance needs to be evaluated in specifically designed prospective trials.

Regional anesthesia for compartment syndrome as a complication of ECMO. Case report / Anestesia regional para síndrome compartimental como complicación de ECMO. Reporte de caso

Abstract We present the case of a patient intervened for mechanical mitral replacement, tricuspid annuloplasty, and correction of a total anomalous pulmonary venous return, which required Extracorporeal Membrane Oxygenation (ECMO) in the immediate postoperative period because of refractory cardiogenic shock. After withdrawal of the arterial cannula, the patient developed compartment syndrome of the right lower limb, requiring urgent intervention. Also, the patient went into respiratory failure, requiring support with high flow oxygen cannula. Given the patient's condition, general anesthesia was discarded. An ultrasound-guided popliteal block and sedation with dexmedetomidine and ketamine was performed instead, maintaining the high flow nasal cannula. Regional anesthesia along with dexmedetomidine and ketamine could be an alternative for a surgical procedure in patients with high risk of cardiovascular and respiratory complications.

Resumen Presentamos el caso de una paciente femenina sometida a remplazo de válvula mitral mecánica, anuloplastia y corrección de retorno venoso pulmonar anómalo total, quien requirió oxigenación con membrana extracorpórea (ECMO) en el postoperatorio inmediato debido a shock cardiogénico refractario. Una vez retirada la cánula arterial, la paciente desarrolló síndrome compartimental de la extremidad inferior derecha, requiriendo intervención urgente. Adicionalmente, presentó insuficiencia respiratoria que requirió soporte de oxígeno por cánula de alto flujo. En vista de la condición de la paciente se descartó la anestesia general, optando a cambio por un bloqueo poplíteo guiado por ultrasonido más sedación con dexmedetomidina y ketamina, manteniendo la cánula nasal de alto flujo. La anestesia regional junto con dexmedetomidina y ketamina puede ser una alternativa para procedimientos quirúrgicos en pacientes de alto riesgo cardiovascular y complicaciones respiratorias.

Brazilian initial experience with lung transplantation due to irreversible lung fibrosis post-COVID-19 in a national reference center: a cohort study

ABSTRACT BACKGROUND: Lung transplantation (LTx) has been discussed as an option for treating irreversible lung fibrosis post-coronavirus disease 2019 (COVID-19), in selected cases. OBJECTIVES: To report on the initial experience and management of end-stage lung disease due to COVID-19 at a national center reference in Brazil. DESIGN AND SETTING: Cohort study conducted at a national reference center for lung transplantation. METHODS: Medical charts were reviewed regarding patients' demographics and pre-COVID-19 characteristics, post-LTx due to COVID-19. RESULTS: Between March 2020 and September 2021, there were 33 cases of LTx. During this period, we evaluated 11 cases of severe COVID-19-related acute respiratory distress syndrome (ARDS) that were potentially candidates for LTx. Among these, LTx was only indicated for three patients (9.1%). All of these patients were on venovenous extracorporeal membrane oxygenation (ECMO), and the procedure that they underwent was central venoarterial ECMO. All three patients were still alive after the first 30 postoperative days. However, patient #1 and patient #2 subsequently died due to fungal sepsis on the 47th and 52nd postoperative days, respectively. Patient #3 was discharged on the 30th postoperative day. CONCLUSIONS: LTx is feasible among these complex patients. Survival over the first 30 days was 100%, and this favors surgical feasibility. Nonetheless, these were critically ill patients.

Fulminant myocarditis with multiple organ dysfunction treated by extracorporeal life support in ICU: report of 9 adult cases / 中华全科医师杂志

Objective:To summarize the clinical experience in the treatment of fulminant myocarditis with multiple organ dysfunction using extracorporeal life support in the ICU.Methods:Clinical data of 9 adult cases of fulminant myocarditis complicated with multiple organ dysfunction admitted in ICU from January 2019 to October 2020 were retrospectively analyzed.Results:All patients received immunoregulatory and antiviral therapy; mechanical ventilation and renal replacement treatment were performed. Extracorporeal life support was also applied, including 1 case receiving intra-aortic balloon pump (IABP) support, and 6 cases receiving IABP and venous-arterial extracorporeal membrane oxygenation (VA-ECMO). In 6 cases with ECMO, the SpO 2(100.0±0)%, ScvO 2(78.7±3.9)%, hsTnI [10.0(2.2,31.8)mg/ml], oxygenation index[437.0(326.5,450.8)], lactic acid [(1.5±0.5)mmol/L], BE(-1.1±1.9)and LVEF(53.5±12.6)% were significantly improved 5 days after treatment compared with before [(98.0±1.4)%,(61.9±4.3)%,27.1(16.6,50.0)mg/ml,159.7(70.3,190.9),(6.4±3.4)mmol/L,(-10.3±4.6),(29.0±11.1)%]( t=-3.46, -9.74; Z=-1.99, -4.89; t=3.63, -5.84, -3.33; P<0.05). Eight patients were discovered and discharged, and one patient died. Conclusion:Fulminant myocarditis develops rapidly, integrated treatment based on extracorporeal mechanical life support and immunomodulatory therapy can improve the outcome of patients in the ICU.

Clinical research progress on pediatric lung transplantation / 器官移植

Lung transplantation is an efficacious treatment for end-stage lung diseases in children. Shortage of donor lungs, poor donor-recipient matching, difficult postoperative management, multiple postoperative complications and high fatality jointly restrict the development of pediatric lung transplantation. However, significant progress has been achieved in each transplantation center along with the popularization of organ donation after citizen' s death, advancement of medical science and technology and accumulation of lung transplantation experience. In recent years, clinical application of donor lung from donation after brain death and marginal donor lung repair, maturity of perioperative life support technology and surgical transplantation procedure and reference of management experience after adult lung transplantation have accelerated rapid development of pediatric lung transplantation. In this article, current status and progress on primary diseases, utilization and allocation of donor lungs, selection of surgical techniques, management of postoperative complications and clinical prognosis of pediatric lung transplantation were elucidated, aiming to provide reference for clinical diagnosis and treatment.

Current status and prospect of global development of lung transplantation / 器官移植

During the novel coronavirus pneumonia (COVID-19) pandemic from 2020 to 2021, lung transplantation entered a new stage of development worldwide. Globally, more than 70 000 cases of lung transplantation have been reported to the International Society for Heart and Lung Transplantation (ISHLT). With the development of medical techniques over time, the characteristics of lung transplant donors and recipients and the indications of pediatric lung transplantation recipients have undergone significant changes. Application of lung transplantation in the treatment of COVID-19-related acute respiratory distress syndrome (ARDS) has also captivated worldwide attention. Along with persistent development of lung transplantation, it will be integrated with more novel techniques to make breakthroughs in the fields of artificial lung and xenotransplantation. In this article, research progresses on the characteristics of lung transplant donors and recipients around the world were reviewed and the development trend was predicted, enabling patients with end-stage lung disease to obtain more benefits from the development of lung transplantation technique.